test 7 Flashcards
Obstructive Lung Disease definition
Conditions that make it hard to exhale all the air in the lungs
Types of obstructive lung disease
Asthma, COPD (emphysema, chronic bronchitis), bronchiectasis, cystic fibrosis
4th leading cause of death in US
COPD
COPD triad
chronic bronchitis, emphysema, asthma
Chronic inflammation and thickening of the walls of the bronchial tubes with excess mucus
Chronic bronchitis
Abnormal, permanent enlargement of the alveoli, accompanied by destruction of their walls and without obvious fibrosis
Emphysema
What are the three main issues with COPD?
airway inflammation
mucociliary dysfunction
consequent airway structural changes
Causes of COPD other than smoking
environmental factors, airway hyperresponsiveness, alpha 1-antitrypsin deficiency, IVDU, HIV, GERD
alpha 1 antitrypsin function
made in liver, protects lung parenchyma from elastolytic breakdown. Deficiency causes COPD
Most common non-infectious pulmonary dz among HIV pts
COPD
Presence of _____ in 28% of COPD pts and increases risk of hospitalization.
GERD
Most common variable to grade severity of COPD
FEV1
What is the best single predictor of airflow obstruction?
Hx of >40 pack years smoking
COPD presentation (4)
DOE
Productive cough (worse in am)
Acute chest illness
Wheezing
What is Hoover sign?
Accessory muscle use
COPD PE: Breath sounds
Wheezing
Diffusely decreased breath sounds
Prolonged expiration
Coarse crackles on inspiration
COPD PE: Inspection, percussion
Hyperinflation (barrel chest)
Hyperresonant on percussion
Peripheral edema
Blue Bloater
Chronic bronchitis
Pink Puffer
Emphysema
Chronic bronchitis vs. emphysema PE
Chronic bronchitis: obese, frequent cough, R sided heart failure
Emphysema: thin w/ barrel chest, no cough, heart sounds distant
COPD lab findings
FEV1/FVC <70%
DLCO (decreased lung carbon monoxide diffusing capacity)
Increased pCO2 and HCT
Decreased pH
Why hematocrit is high in COPD
Normal amounts of oxygen can’t reach blood stream, so body adjusts by making more RBCs
COPD Xray findings
Low, flattened diaphragm
Hyperinflation
Increased AP retrosternal airspace
Narrow cardiac silhouette
Airflow limitation
Inflammation –> small airway dz and parenchymal destruction –> airflow limitation
GOLD criteria for COPD
Symptoms (from mMRC or CAT), airflow obstruction (FEV1), and exacerbation hx
low risk with more symptoms is what category?
B
High risk with less symptoms is what category?
C
High risk with more symptoms is what category?
D
What is a SAMA?
short acting anticholinergic
Ipratrapium
SAMA
Atrovent
SAMA
Serious reactions: bronchospasm, anaphylaxis, hypokalemia
SABA + SAMA
Serious reactions: a-fib, hypokalemia
SABA
Albuterol, ventolin, proventil
SABA
relaxes bronchial smooth muscle and inhibits release of immediate hypersensitivity mediators from mast cells
SABA and LABA
Reduces need for rescue medication. 21% reduction in exacerbations.
LABA
Salmeterol, formoterol, serevent, foradil
LABA
Serious rxn: bowel obstruction, bronchospasm, glaucoma
LAMA, SAMA
Tiotropium
LAMA
Spiriva
LAMA
Preferred once a day agent for COPD
LAMA
Preg. Cat for SAMA and LAMA
SAMA: B
LAMA: C
Adverse effects: pharyngitis, diarrhea, extremity pain
LAMA + LABA
Serious Rxn: asthma related death, anaphylaxis, HTN, hypokalemia, prolonged QT
LAMA + LABA
Umeclidium/vilanterol
LAMA + LABA
Anoro Ellipta
LAMA + LABA
Wait at least a minute before using another inhaler
LAMA + LABA
Serious rxns: hypokalemia, glaucoma, cataracts, death
ICS + LABA
Formoterol/budesonide
Salmeterol/fluticasone
Formoterol/mometasone
ICS + LABA
Symbicort, Advair, Dulera
ICS + LABA
Thought to reduce neutrophil and eosinophil counts in the lungs
PDE4i
Adverse effects: decrease in weight, GI upset, influenza, backache, dizziness, HA, insomnia
PDE4i
Serious rxn: suicidal thoughts
PDE4i
Roflumilsat
PDE4i
Daliresp
PDE4i
Not generally recommended for COPD
Theophylline
Serious rxn: a-fib, SJS, seizures
theophylline
Complications of COPD
Resp. infx Pulmonary HTN Increased risk of heart disease and GERD Lung cancer Depression (40% are severely affected)
What’s added to convention COPD therapy to reduce frequency of common cold, which can trigger COPD exacerbations?
PPIs
Define chronically hypoxic
Resting O2 <90% w/ pulm htn or R heart failure
Vaccines for COPD pts
Pneumococcal >65
Influenza in all COPD pts
Chronic COPD infxn colonization
S. pneumoniae
H. influenza
M. Catarrhalis
Severe COPD infx colonization
P. aeruginosa
“relievers”
SABA, anticholinergics
“controllers”
LABA
“Preventers”
ICS, LTRAs
Abnormal, permanent dilation/destruction of bronchi walls
Bronchiectasis
Important cause of lung dz in developing countries and was a common fatal condition before abx
Bronchiectasis
“Lady Windermere” syndrome
bronchiectasis
Bronchiectasis most common demographic
female, white, slender, >60
Vit. D deficiency is common (vit D deficient with bronchiectasis means P. aeruginosa likely)
Causes of bronchiectasis
acquired more common: infection, airway obstruction, impaired drainage, toxic gas exposure, CF
Congenital
Bronchiectasis: Affected bronchi show 4 things
transmural inflammation
mucosal edema
craters
ulcers
Culprits of bronchiectasis infection
S. pneumonia S. aureus H. influenza M. tuberculosis P. aeruginosa M. avium M. catarrhalis RSV
GERD or aspiration pneumonia are what etiology of bronchiectasis?
airway obstruction
CF, Primary ciliary dyskinesia, and allergic bronchopulmonary aspergillosis (ABPA) are what etiology of bronchiectasis?
impaired drainage
Toxic gas exposure is commonly what?
chlorine, ammonia
Causes 1/3 of all bronchiectasis
Cystic Fibrosis
Causes 1/3 of bronchiectasis that is not CF
Sequela of necrotizing infxns that are not treated properly or not treated at all
Clinical manifestations of bronchiectasis
Dyspnea, pleuritic chest pain, wheezing, fever, weakness, weight loss
Bronchiectasis: PE auscultation
Crackles
Rhonchi
Wheezing
Inspiratory squeaks
Bronchiectasis: PE inspection
digital clubbing
cyanosis
wasting
weight loss
What confirms bronchiectasis?
high resolution CT
Treatment of bronchiectasis?
- Control infection with fluoroquinolones
- Reduce inflammation
- Improve bronchial hygiene
What’s used to reduce inflammation in bronchiectasis?
B2 agonists
Anti-cholinergics
Inhaled Corticosteroids
How do you improve bronchial hygiene?
Airway mucus clearance via chest percussion and postural drainage
What do you use to treat infx of bronchiectasis?
fluroquinolones
Dz of endocrine gland, mucus blocks bronchi, pancreatic ducts, and intestines
CF
aut. recessive, chromosome 7
Most common lethal hereditary disease in the white population
CF
median age of dx is 6-8 months, 2/3 dx by 1
what gene has a defect in CF?
Protein transmembrane conductance regulator (CFTR)
Clinical manifestations of CF
severe lung dz, pancreatic insufficiency, nasal polyposis, sinus dz, meconium ileus (obstruction), rectal prolapse, chronic diarrhea, pancreatitis, cholelithiasis, cirrhosis
CF PE (pulm)
rhinitis, nasal polyps, cough (worse at night), tachypnea, resp. distress, wheezes, crackles
CF PE (inspection, percussion)
Increased AP diameter
Clubbing
Cyanosis
Hyperresonant chest
CF PE (GI)
Abd. distension Hepatosplenomegaly (portal htn) Rectal prolapse Dry skin (vit A deficiency) Cheilosis (vit. B deficiency)
CF PE (urogenital)
Males: undescended testicles, hydrocele, absence of vas deferens (>95% of men are sterile)
Females: Severe nutritional deficiency–amenorrhea. 20% infertile
CF PE (other)
scoliosis, kyphosis, swelling of submandibular or parotid gland, aquagenic wrinkling of palms (AWP)
Effects of CF
Sinusitis, hemoptysis, pneumothroax (ruptured alveoli), pancreatic insufficiency, diabetes, cholelithiasis, weak muscles, stress incontinence, osteoporosis, infertility
Diagnosis of CF
positive sweat chloride test (>60 mEq/L) or positive genetic test AND 1 of the following:
COPD, pancreatic insufficiency, positive family hx
Goals of CF treatment
maintain lung fxn, nutritional therapy, manage complications
What’s used to control respiratory infection in CF patients?
Cipro, azithromycin, aerosolized gentamycin or tobramycin if there’s resistance
What infections are CF patients predisposed to?
S. aureus, P. aeruginosa
What’s used to help CF patients clear airways of mucus?
Bronchodilator before chest physiotherapy, mucolytic (dornase alfa, pulmozyme + hypertonic saline solution aerosols)
What nutritional therapy is given to CF patients?
Fat soluble vitamins, pancreatic enzymes, high energy, high fat diet
Ivacaftor (Kalydeco)
CFTR potentiator that targets defective protein in CF.
Repeated chest infx in young person with upper lobe bronchiectasis
Consider CF